implement fast-path for memalign/aligned_alloc/tc_new_aligned
We're taking advantage of "natural" alignedness of our size classes
and instead of previous loop over size classes looking for suitably
aligned size, we now directly compute right size. See align_size_up
function. And that gives us ability to use our existing malloc
fast-path to make memalign neat and fast in most common
cases. I.e. memalign/aligned_alloc now only tail calls and thus avoids
expensive prologue/epilogue and is almost as fast as regular malloc.
2 files changed
